The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 01, 2009
Filed:
Sep. 28, 2007
Shinji Aso, Niiza, JP;
Shinji Aso, Niiza, JP;
Sanken Electric Co., Ltd., Niiza-shi, JP;
Abstract
A direct-current converter includes a high-frequency converting circuit converting voltage of a direct-current power source to alternating-current voltage, a transformer having primary and secondary windings P, S and a rectification smoothing circuit rectifying and smoothing voltage induced in the secondary winding. This converting circuit includes other transformer having first and second windings n, n, switching element Qhaving a source connected to a negative pole of the power source and a drain connected to a positive pole thereof through winding n, and switching element Qhaving a source connected to the negative pole of the power source and a drain connected to the positive pole thereof through winding n, element Qbeing turned on/off alternately to element Qbeing turned on/off. Winding P is connected to a point between winding nand the drain of element Qand another point between winding nand the drain of element Q